# Bulletin of the American Physical Society

# APS March Meeting 2011

## Volume 56, Number 1

## Monday–Friday, March 21–25, 2011; Dallas, Texas

### Abstract: C1.00149 : High resolution scanning tunneling microscope (STM) image of SrTiO$_3$(100)-$\sqrt{5}\times\sqrt{5}-R26.6^\circ$ surface

#### Author:

SrTiO$_3$(100)-$\sqrt{5}\times\sqrt{5}-R26.6^\circ$ surfaces were
studied by scanning tunneling microscope (STM) in ultra-high
vacuum conditions at room temperatures. STM images with truly
atomic resolution in filled states, which have never been
reported, were successfully obtained. The atomic arrangement in
$\sqrt{5}\times\sqrt{5}$ unit cell is clearly seen. It is
currently assumed that Ti and its fourfold site O atoms were
separately imaged with varying bias voltages, which indicates
that TiO$_2$ plane is a basic plane of $\sqrt{5}\times\sqrt{5}$
surface superstructures. The dI/dV images simultaneously taken
with topographic images were also obtained in filled states.
Comparing our experimental results with the previous works,
especially a theoretical study of O-vacancy model [1] and an
experimental and theoretical study of Sr adatom model [2],
possible structures on $\sqrt{5}\times\sqrt{5}$ surfaces will be
discussed.\\[4pt]
[1] Z. Fang and K Terakura, Surf. Sci. 470, L75(2000)\\[0pt]
[2] T. Kubo and H. Nozoye, Phys. Rev. Lett. 86, 1801(2001)

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.C1.149

## Follow Us |
## Engage
Become an APS Member |
## My APS
Renew Membership |
## Information for |
## About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |

© 2021 American Physical Society
| All rights reserved | Terms of Use
| Contact Us

**Headquarters**
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200

**Editorial Office**
1 Research Road, Ridge, NY 11961-2701
(631) 591-4000

**Office of Public Affairs**
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700